Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Cyanobacteriota Oren et al. 2022
                 Class Chroococcophyceaeᵀ Hollerbach et al. 1953
                   Order Nostocales corrig. Borzì 1914
                     Family Capsosiraceae Geitler 1925, incertae sedis
                       1 Genus Capsosiraᵀ Kützing ex Bornet and Flahault 1886
                       2 Genus Desmosiphon Borzì 1907
                       3 Genus Ghoshia Mandal and Maithy 1984
                       4 Genus Nematoplaca Geitler 1933
                       5 Genus Stauromatonema Frémy 1930